Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	Re: Kernel showing segfaults in motorPoller.
From:	Ralph Lange via Tech-talk <tech-talk at aps.anl.gov>
To:	EPICS Tech Talk <tech-talk at aps.anl.gov>
Date:	Thu, 26 Jan 2023 20:04:35 +0100

On Thu, 26 Jan 2023 at 19:02, Marco A. Barra Montevechi Filho via Tech-talk <tech-talk at aps.anl.gov> wrote:

We are experimenting several segfaults with motor IOCs here. Behavior is unpredictable, but i suspect common cause.

Any tips on how to debug this?

Get core dumps.

Most probably it's enough to set the core file size before running your IOC:

$ ulimit -c unlimited

You can always check the current limit with 'ulimit -a'.

Then load the core file into gdb and have a look.

Cheers,
~Ralph

References:: Kernel showing segfaults in motorPoller. Marco A. Barra Montevechi Filho via Tech-talk

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ANJ, 27 Jan 2023